UniTel Voice can play audio through the Android device, over the speaker phone, or through supported accessories.
If you only have two audio outputs options, tap Speaker to turn on the speaker phone. Speaker changes to Bluetooth if there are Bluetooth devices paired and Headset if there is a wired headset connected.
When you have more than two audio output options, tap Speaker, Bluetooth, or Headset, and select your preferred audio output.
Muting calls
Mute calls by using the toolbars so your audio is not sent to the remote party.
Android Phone or Tablet: Tap the microphone icon 